45acp help
- Thread starter 00bryan
- Start date
It goes back even further. That was the load used in the 1910 development cartridge. Found that in Colt 45 Service Pistols: Models of 1911 and 1911A1 by Charles W. Clawson*. This load still works so well that even today among Bullseye Competitors, it is a recommended Ball load.
* Glad I bought that book when I did. Currently not available on Amazon, and on Ebay, the cheapest used version is $795.00!! http://www.ebay.com/itm/Colt-45-Ser...s-W-Clawson-/191651088337?hash=item2c9f4b87d1
I know I'm getting here late in the game but I'm looking at my Hornady book here . I have 7.2gr min and 9.1gr as max . Hornady is using Win LP primer and 5" 1911 for there test . I know you guys are saying he is maxed out but Hornady says he has not even hit the half way point . I here Long shot likes to be pushed hard . Any chance he needs a higher charge to give more pressure 
These are not suggestions , just thinking out loud
P.S.
I post here for two reasons . 1) just to show what Hornady has in there manual . 2) I just so happen to be working up a load right now using 200gr XTP and Longshot . Per the book I started at 6.6 and finished at 8.5 one tenth grain under max for the 200gr XTP . I will be using Win primers and a 5" 1911 for my test . I plan to test these Thursday or Friday . Am I to going to be over max with these loads ?
These are not suggestions , just thinking out loud
P.S.
I post here for two reasons . 1) just to show what Hornady has in there manual . 2) I just so happen to be working up a load right now using 200gr XTP and Longshot . Per the book I started at 6.6 and finished at 8.5 one tenth grain under max for the 200gr XTP . I will be using Win primers and a 5" 1911 for my test . I plan to test these Thursday or Friday . Am I to going to be over max with these loads ?
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Well I just got back from the range where I tested some 200gr XTP 45 bullets using longshot . I'm confused with the results though and maybe you all have an idea what was happening .
Lets start with what the Hornady book list as min to max laods and what they used to test
OVERVIEW PAGE IN BOOK
Firearm = Springfield 1911 5"
Cases = Hornady
Primer = Win LP
COAL = 1.275
Bullet diameter = .451
Load data
200gr XTP
OAL 1.210
min 6.6gr @ 800fps
Max 8.6gr @ 1000fps
OK now my loads
Firearm = Springfield 1911
Cases = Winchester
Primer = Win LP
Bullet diameter = .451
200gr XTP
COAL 1.240 suggested OAL in book 1.210
Loads and Avg velocities
6.5gr @ 750fps
7.0gr @ 834fps
7.3gr @ 864fps
7.6gr @ 875fps
And here is where it gets odd and I'm not sure how much this has to do with My chrono or not . It started acting up after this .
7.9gr @ Unknown but 4 of 5 shots were 972fps / 952 / 944 / 1159
8.1gr @ unknown but 5 shots were 1165fps / 1157 / 273 / 1161 / 268
So now I'm sitting there looking at those numbers seeing that there is clearly something wrong but not sure what . 8.1gr in the book should be around 950fps but I'm getting 200fps more velocity . I re-look at the brass and I don't see any issue on the head but do notice that from the mouth to about 3/4 of the way down on one side is black-ish but for the most part they all kinda look like this . Now I'm wondering was it the chrono or the loads . Do I shoot the next increment or not .
I did and this is what I got , 8.2gr @ 1149fps / 1157 / 1157 / 1161 / 1156 with a ES of 12 and SD of 4 . OK I'm clearly over pressure/max . I should not even be at 1000fps with that load . Hodgdon website only has 1 load for Longshot and a 200gr bullet . It is a JHP but it maxes out at 7.8gr @ about 1000fps . Is Hornady that far off on there data for those two combined components ?
I obviously stop there and start looking at my notes . There are two things that are different from Hornady to my loads . The cases and what I believe is the COAL . The cases I feel should be less of a factor but you all may know better . There COAL on the first page ( overview ) is 1.275 ( I'm assuming that's a MAX number and NOT what they loaded all test rounds to ) and the bullet data it self says 1.210 so I'm not sure what there test loads were seated at , Mine were 1.240 . Where do you think they seated the 200gr XTP ? I doubt it was 1.210 or 1.275 and I feel that may be the most important question to be answered in order to understand why my results are so different then the book . If they loaded at 1.210 then mine should have less pressure but if they were at 1.275 , my 1.240 would have much more pressure .
It just seemed odd that the velocity was moving as expected then just exploded to way over where it should have been . I should add that this was load development so I weighed each charge and confirmed the scale with check weights before each charge .
Is Longshot one of those spiky powders when you get at the higher end of the charges it starts having unpredictable pressure spikes ?
Any and all thoughts welcome on what's going on here .
Thanks Metal
Lets start with what the Hornady book list as min to max laods and what they used to test
OVERVIEW PAGE IN BOOK
Firearm = Springfield 1911 5"
Cases = Hornady
Primer = Win LP
COAL = 1.275
Bullet diameter = .451
Load data
200gr XTP
OAL 1.210
min 6.6gr @ 800fps
Max 8.6gr @ 1000fps
OK now my loads
Firearm = Springfield 1911
Cases = Winchester
Primer = Win LP
Bullet diameter = .451
200gr XTP
COAL 1.240 suggested OAL in book 1.210
Loads and Avg velocities
6.5gr @ 750fps
7.0gr @ 834fps
7.3gr @ 864fps
7.6gr @ 875fps
And here is where it gets odd and I'm not sure how much this has to do with My chrono or not . It started acting up after this .
7.9gr @ Unknown but 4 of 5 shots were 972fps / 952 / 944 / 1159
8.1gr @ unknown but 5 shots were 1165fps / 1157 / 273 / 1161 / 268
So now I'm sitting there looking at those numbers seeing that there is clearly something wrong but not sure what . 8.1gr in the book should be around 950fps but I'm getting 200fps more velocity . I re-look at the brass and I don't see any issue on the head but do notice that from the mouth to about 3/4 of the way down on one side is black-ish but for the most part they all kinda look like this . Now I'm wondering was it the chrono or the loads . Do I shoot the next increment or not .
I did and this is what I got , 8.2gr @ 1149fps / 1157 / 1157 / 1161 / 1156 with a ES of 12 and SD of 4 . OK I'm clearly over pressure/max . I should not even be at 1000fps with that load . Hodgdon website only has 1 load for Longshot and a 200gr bullet . It is a JHP but it maxes out at 7.8gr @ about 1000fps . Is Hornady that far off on there data for those two combined components ?
I obviously stop there and start looking at my notes . There are two things that are different from Hornady to my loads . The cases and what I believe is the COAL . The cases I feel should be less of a factor but you all may know better . There COAL on the first page ( overview ) is 1.275 ( I'm assuming that's a MAX number and NOT what they loaded all test rounds to ) and the bullet data it self says 1.210 so I'm not sure what there test loads were seated at , Mine were 1.240 . Where do you think they seated the 200gr XTP ? I doubt it was 1.210 or 1.275 and I feel that may be the most important question to be answered in order to understand why my results are so different then the book . If they loaded at 1.210 then mine should have less pressure but if they were at 1.275 , my 1.240 would have much more pressure .
It just seemed odd that the velocity was moving as expected then just exploded to way over where it should have been . I should add that this was load development so I weighed each charge and confirmed the scale with check weights before each charge .
Is Longshot one of those spiky powders when you get at the higher end of the charges it starts having unpredictable pressure spikes ?
Any and all thoughts welcome on what's going on here .
Thanks Metal
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